/**
  * Makes copies of the original value all the objects that we wish to track.
  *
  * <p>Shallow copies are sufficient since none of our objects contain children. (All lists are
  * stored as comma-delimited strings so they can be serialized nicely.)
  *
  * @param originalObjects
  */
 public void initialise(Collection<?> originalObjects) {
   this.originalObjects = new HashMap<String, TohuObject>();
   for (Object object : originalObjects) {
     if (object instanceof TohuObject) {
       TohuObject i = (TohuObject) object;
       try {
         this.originalObjects.put(i.getId(), (TohuObject) i.clone());
       } catch (CloneNotSupportedException e) {
         // ignore
       }
     } else if (object instanceof Answer) {
       Answer answer = (Answer) object;
       storeClientAnswer(answer);
     }
   }
 }